Too many people these days claim that any criticism of the U.S.A. is unpatriotic. Let us take that attitude to its logical conclusion that the country is perfect and any change is bad.
The legal entity of the U.S.A. governed by the Constitution came into existence at 0 AM NYC LAT on March 4, 1789. If the perfect patriotism attitude was valid, then that original U.S.A. must be the ideal version.
There were 13 states. The capital was New York City. Half of the country practiced legal slavery. Women could not vote. Indoor plumbing was very rare. Human-controlled electricity was unknown. There were no telephones. There were no automobiles with internal combustion engines. There was no modern medicine: antibiotics, x-rays, MRI, CAT scans, open-heart surgury, pacemakers, transplants, etc. There were no electronic devices: cell phones, computers, games, etc. There was no Internet. Barring the existence of hidden immortals, nobody now alive had been born.
THERE WAS NO BILL OF RIGHTS. Even the right to bear arms that the right-wing packed court has recently twisted was not in the original Constitution. The Bill of Rights was not ratified until December 15, 1791.
None of these Amendments to the U.S. Constitution existed (1-10 are the Bill of Rights) (text copied from Wikipedia to save typing):
1st: Freedom of religion, of speech, of the press, to petition, and to assemble
2nd: The right to keep and bear arms (the right to protect one self with a weapon)
3rd: No quartering of soldiers in private houses during peace time, i.e. no Declaration of War has been announced
4th: Unreasonable Searches and seizures; warrants
5th: Indictments; Due process; Self-incrimination; Double jeopardy, and rules for Eminent Domain.
6th: Right to a fair and speedy public trial, Notice of accusations, Confronting one's accuser, Subpoenas, Right to counsel
7th: Right to trial by jury in civil cases
8th: No excessive bail & fines or cruel & unusual punishment
9th: Unenumerated rights
10th: limits the power of the Federal government
11th: Immunity of states from suits from out-of-state citizens and foreigners not living within the state borders. Lays the foundation for sovereign immunity.
12th: Revision of presidential election procedures
13th: Abolition of slavery
14th: Citizenship, state due process, applies Bill of Rights to the states, revision to apportionment of Representatives, Denies public office to anyone who has rebelled against the United States
15th: Racial suffrage
16th: Allows federal income tax
17th: Direct election to the United States Senate
18th: Prohibition of alcohol (Repealed by 21st amendment)
19th: Women's suffrage
20th: Term Commencement for congress (January 3) and president (January 20.) (This amendment is also known as the "lame duck amendment".)
21st: Repeal of Eighteenth Amendment; state and local prohibition permitted
22nd: Limits the president to two terms
23rd: Representation of Washington, D.C. in the Electoral College
24th: Prohibition of the restriction of voting rights due to the non-payment of poll taxes
25th: Presidential disabilities
26th: Voting age nationally established as age 18
27th: Variance of congressional compensation (Congressional pay raises take effect after an election)

Life is change. An unchanging system is dead. People who say a country can be improved are living in the present rather than frozen in the past.
To take this to the full reductio ad absurdum conclusion, nobody born since March 4, 1789 could even be a U.S. citizen and patriot.